Finding the Fourth Proportional to 16,711.08, 23,061.32 and 9,156.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,711.08 : 23,061.32 = 9,156.21 : x
2. Step 2: Convert to fraction form
   16,711.08/23,061.32 = 9,156.21/x
3. Step 3: Cross multiply
   16,711.08x = 23,061.32 × 9,156.21
4. Step 4: Simplify right side
   16,711.08x = 211,154,369.34
5. Step 5: Solve for x
   x = 211,154,369.34/16,711.08
6. Step 6: Final answer
   x = 12,635.59